Question:medium

At $27^\circ C$, the $K_a$ of acetic acid is $1.8 \times 10^{-5}$. What is the percentage of ionization of 0.02M of this acid at $27^\circ C$?

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Always check if the approximation $\alpha \ll 1$ holds. Here, $0.03$ is indeed much less than $1$, so the simplified formula is valid.

Updated On: Mar 31, 2026

6
3
2
1.5

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The Correct Option is B

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